How to Find the Right Part for Your Apple Device: A Complete Guide to Getting It Right

Introduction

If you have a damaged Apple device or need to replace a faulty component, the first thing you need to know is what model you have and which part is the correct one. While Apple is known for its sleek design and reliable hardware, it also uses internal reference codes that aren't always easy to understand.

In this article, we’ll walk you through—in simple terms and with clear examples—how to correctly identify your Apple device and how to find the exact replacement part you need, avoiding common mistakes that could cost you time and money.

1. Why Identifying Your Apple Model Matters

Every Apple device (iPhone, MacBook, iPad, etc.) may have several versions with slight internal differences, even if the exterior looks almost the same.

For example:

• A MacBook Air A1932 (2018) doesn’t use the same components as the A2179 (2020).

• A screen for iPhone 11 Pro won’t fit an iPhone 11 Pro Max, even though the names are similar.

This is why the model number (Axxxx) and the part number (like 821-xxxxx) are so important.

2. How to Find the Model Number (Axxxx)

Apple uses a model number that starts with the letter "A" followed by four digits. This code is used in all official Apple documentation and is essential for checking part compatibility.

📍 Where to Find It

✅ On a MacBook:

• Flip the laptop over. You'll find a line of small text that says "Model Axxxx."

✅ On an iPhone:

• On older models (before iPhone 8), it’s engraved on the back.

• On newer models, go to Settings > General > About > Model Number. Tap it to reveal the Axxxx format.

✅ On an iPad:

• It's printed on the back, below the Apple logo.

✅ On Apple Watch or others:

• It’s engraved on the back of the watch or visible in the iPhone Watch app.

Once you have that model number, you're one step closer to identifying the correct part.

3. What Type of Part Do You Need?

Depending on the issue or what needs replacing, you may be looking for:

• Display (complete screen or LCD only)

• Battery

• Keyboard

• Trackpad

• Charger or USB-C connector

• Logic board or internal connectors

• Flex cables

• Cooling fan

• Housing (top or bottom case)

Each of these components has its own part number.

4. What Is a Part Number?

In addition to the device model, Apple assigns unique codes to every component, which makes it possible to identify the exact replacement part.

🔢 Most Common Part Number Formats:

• 821-xxxxx-xx: usually internal cables, connectors, power adapters, sensors, etc.

• 661-xxxxx: larger parts like batteries, logic boards, displays.

• 020-xxxxx: occasionally used for logic boards or sensors.

✅ Examples:

• 821-01658-A: USB-C connector for MacBook Air A1932

• 821-03084-A: Type-C power connector for MacBook A2442, A2485, A2779

• 661-02536: battery for MacBook Pro A1708

5. How to Find the Exact Part Number

🧭 Option 1: Remove the Damaged Part

In most cases, if you disassemble the device, you’ll see the part number printed or engraved directly on the component. This is the most accurate method.

🧭 Option 2: Use Specialized Sites

You can search on websites like:

• iFixit.com

• Senove.com

Just type something like:

And you’ll find compatible parts.

6. What If the Part Number Isn’t Visible?

Sometimes, the part number isn’t printed or is no longer legible. In that case:

• Use the device’s model number (Axxxx)

• Clearly specify the part you're looking for (“charging port,” “Spanish keyboard,” etc.)

• If possible, find out the exact year of the device (e.g., MacBook Pro 13" A1708 (2016))

7. How to Make Sure a Part Is Compatible

Even if parts look similar, there are often subtle differences that can affect compatibility—like cable length, connector type, or screw placement.

✔️ Tips:

• Always search using both the Axxxx model and the part number, if available.

• Check the product listing to confirm compatibility.

• If buying from a specialized store like Senove.com, you can ask before you buy to confirm the part fits your device.

8. Where to Buy Apple Parts with Confidence

🌐 Recommended Stores:

• Senove.com: specialized in replacement parts for Apple laptops and other brands, with personalized support.

• iFixit: ideal for guides and DIY repair kits.

Always check:

• Buyer reviews

• Return and warranty policies

• Customer support in case of incompatibility

9. What If You’re Not Sure What Part You Need?

No worries. Many specialized sellers (like Senove.com) offer personal assistance. Just send them:

• Your device's model number (Axxxx)

• A photo of the damaged part

• A brief description of the issue

They'll tell you exactly which part you need and whether any extra steps are required.

Conclusion

Finding the correct part for your Apple device doesn’t have to be a headache. You just need to know your model number and, if possible, the reference number of the part you want to replace. With that information, you’ll be ready to repair your device accurately, affordably, and safely.

And remember: if you’re in doubt, ask before you buy. It’s better to be sure than to waste time or money on incompatible parts.